Spray the air fryer basket liberally with olive oil or coocnut oil cooking spray.
In a bowl, mix the dry ingredients: cornstarch, all purpose flour, salt and pepper.
In another bowl crack a large egg and whisk.
Take the chicken pieces and coat completely with the cornstarch/flour mixture, then dip them in the egg wash.
Place these pieces in the air fryer with space between them to cook all the way around.
Air fry for 4 minutes, then using tongs, flip the chicken pieces over and cook the remaining 4-5 minutes depending on the thickness of your pieces. Finish with the rest of the chicken.
For the Sauce:
In a medium saucepan, before placing over heat, add the chicken broth, then whisk the cornstarch so there are no lumps.
Place the saucepan over medium high heat and add the rest of the ingredients for the sauce. Whisk until completely combined.
Whisk sauce continuously as it comes to a boil. Reduce to a simmer and simmer for about 5 minutes until the sauce has thickened.
Add chicken to sauce and stir, coating each piece evenly.
Serve hot, fresh with rice, noodles, or broccoli.
Notes
Chicken breasts can be used instead of chicken thighs (but Genera Tso's chicken is always made with chicken thighs at your favorite Chinese restaurants).
Make sure that you cook this in batches so as not to overcrowd the air fryer snd the air can circulate.
This can be doubled to serve more people (again cooking in batches).
This can be frozen, see my tips above.
Make sure to spray the air fryer basket before adding the chicken.